Swoon alert: Video of Joseph Gordon-Levitt performing at the Serge Gainsbourg tribute concert at the Hollywood Bowl Sunday night has hit the interweb. This comes a week after he performed a cover of Nirvana's "Lithium," causing a rampant JGL-induced fever to all Jezebel readers who watched. (I hear that a splash of water to the face and listening to child bride Courtney Stodden speak at length will cure you of said fever. There! Now you can get back to your busy workday.)